It is very common for hemodialysis patients to have problems with low blood pressure while on hemodialysis. Low blood pressure on dialysis is not a good thing and it is associated with an increased risk of death and hospitalizations. It might be possible to minimize or even prevent these low blood pressure episodes with a software that can be added to the dialysis machine which detects the patient's changes in blood pressure and automatically slows down how much fluid is being removed from the person.